111420000 has 180 divisors, whose sum is σ = 396576180. Its totient is φ = 29664000.

The previous prime is 111419963. The next prime is 111420017. The reversal of 111420000 is 24111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 179691 + ... + 180309.

It is an arithmetic number, because the mean of its divisors is an integer number (2203201).

Almost surely, 2^111420000 is an apocalyptic number.

111420000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198288090).

111420000 is an abundant number, since it is smaller than the sum of its proper divisors (285156180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111420000 is an equidigital number, since it uses as much as digits as its factorization.

111420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 111420000 is about 10555.5672514555. The cubic root of 111420000 is about 481.1949394476.

Adding to 111420000 its reverse (24111), we get a palindrome (111444111).

The spelling of 111420000 in words is "one hundred eleven million, four hundred twenty thousand".